High Fidelity’s content protection plan has high costs (Vendor articulates problems)
Specifically, if you care about content ownership then focus on helping build the ecosystem of open-source virtual reality platforms such as High Fidelity. Even if you’re planning on using a walled garden solution — such as a “closed grid” — make sure that it will be based on a platform that is open source and has more than one vendor offering services for it.
...the very nature of the public ledgers that blockchains utilize makes anonymity very hard to protect over time, especially if transactions can be correlated with data gathered from third parties.
See for example this article which explains how various techniques used to anonymize Bitcoin transactions can be overcome using data from online marketplaces to find the real identities of the buyers.
Given that all information stored in public blockchains is permanently accessible to everyone, no data stored in a public blockchain can be considered permanently anonymous.
This is a problem for a system that defines content ownership, especially if the people designing it assume that they can promise anonymity to the people using it, which the High Fidelity article does.
... As the proportion of content that isn’t registered in the blockchain increases compared to that which is included in it, the inventory blockchain’s value will decrease for determining who should be allowed to rez particular content.
A third problem is that even if all the transaction speed problems that currently exist with various blockchain implementations were to be resolved and the global inventory blockchain was able to handle hundreds of thousands of transactions per second, storage and bandwidth costs would make it very expensive to host a copy of the blockchain.